Door-spring



UNITE s'rfrs armar onirica.

FRANKLIN KELLSEY, OF MIDDLETOWN, CONNECTICUT.

DOOR-SPRING.

Specification of Letters Patent No. 5,654, dated June 27, 1848.

To all whom t may concern:

Be it known that I, FRANKLIN KELLSEY, of Middletown, county ofMiddletown, and State of Connecticut, have invented a new and ImprovedMode of Making Door and Grate Springs; and I do hereby declare that thefollowing is a full `and exact description, the annexed drawings forminga part of this specilication.

The nature of my invention consists in the construction of a frame orbarrel whereby I am enabled to apply a spiral spring regulated by ajointed lever and thereby obtain an equal pressure upon the door or gateas also to turn the dead point of the lever ,applying the power of thespring to keep the door or gate open as well as shut.

To enable others skilled in the art to make l use of my invention IYwill proceed to describe its construction and operation.

I construct my frame 01 spring barrel in two parts with flanges at eachend of the barrel as also transverse flanges attached to the aboveflanges in order to fasten the same to the door or gate post, seedrawing Figures t and 5. In putting the two parts together theprojection A, C, Fig. 5, slides into the end of the barrel B, C, Fig. 4,and at this joint of the barrel slots C, C are cut making an apertureacross the joint of the barrel to hold the spring from turning whenapplied to the same, a. cross bar being made on the spring for thatpurpose.

lhen the above two parts are put together, A, B, will represent t-hehead flanges of the barrel, and D, D, the transverse flanges. There aretwo kinds of springs with their appendages that are applied to this theabove spring barrel. One kind, see Fig. 3, when put on to the barrel andfastened to the door and door-post or casing will represent Fig. 1, adoor spring calculated only to operate on the top of a door. The otherkind, see Fig. 6, when put together with the barrel, will represent Fig.9, or side application to be used either for gates or doors.

In describing the spring Fig. 3 to be used at the top of a door as Fig.l a coil of spring is made, C, with a crossbar at one end of the coil Fwith a crooked lever at the other end G, with an eye turned on the endof the lever D into which an eye of one end of a shackle bar E isfastened in order to communicate the power of the spring toward the doorand this effected by turning a transverse eye at the other end of theshackle bar into the eye B calculated to be fastened to the door by thetransverse flange A.

In order to understand the operation of the above spring as applied to adoor, let F, G, Fig. l, represent the corner and hinge of a door withthe eye I-I, fastened to the top of the Door A, B, with the spring andframe fastened on the door casing E. In opening the door the shackle barC will press upward the end of the spring-lever D causing the coil ofthe spring L on the barrel to wind up until the shackle bar becomesperpendicular with the eye of the springlever at which time the doorwill be opened about a quarter circle as also a dead point of the powerof the spring' will be obtained, press the door past the dead point andthe recoil of the spring will press the door around to the wall, againshut the door and the same operation inversely takes place the power ofthe spring acting to shut the door after passing the dead point.

In opening and shutting doors as above a half turn of the shackle-bar isacquired, which would tend to twist it olf, this I remedy by making, asabove, the eyes on the shackle bar transversely, the eye on the end ofthe spring lever perpendicularly and t-he eye attached to the doorhorizontally and thereby obtain a durable fixture.

In describing the spring Fig. 6 to be used at the side of a door orgate, let D represent the coil of spring, G the crossbar, C the springlever with horizontal eye and E also with a horizontally working eyewith right angle or heel flange A to fasten the same to the door or gatethese the above eyes con nected by the shackle bar B with eyes made tocompare alike at each end C, E, comprise the spring and its necessaryappendages to be operated by its being placed on the barrel as at D,Fig. 2.

In order to understand the operation of this side spring let F, H,represent the corner and hinge of a gate 0r door; G, the gate or doorpost; C, D, M, the spring and barrel attached to the post; H, A, E, theright angle or heel flanged eye attached to the gate or door and B theshackle bar connecting the power of the spring with the gate or door asat H, C. In opening this gate or door the right angle eye H with theshackle-bar B forms a ointed lever which will equalize the power of thespring; the power of the jointed lever being in reverse ratio as thepower of the spring, the door or gate will. pass its dead point when theshackle-bar C, B, I-I, is in line with the hinge and produce a similareffect in holding the door or gate open or shut as is produced in theoperation of the top spring Fig. 1.

Either of the above springs fitted up as above may be applied toregulate the power of wind mills in similar manner as applied to gatesor doors; the fans of the windmill to be hung on hinges same as a door.

7What I claim as my invention, and Wish to secure by Letters Patent, is-

The mode in which I make my frames or spring barrels and attach thesprings to the same together with their application to the shutting andholding open of doors, gates,

window-shutters, and other similar purposes. Dated at Middletown the11th day of September, A. D. 1847.

FRANKLIN KELLSEY. In presence of- JONATHAN BARNES,

CURTISS BACON.

